Seat which can be converted into a couchette with a deformable armrest

Abstract

A seat which can be converted into a couchette with a deformable armrest, comprising a squab structure (1) and a backrest structure (2) mounted so as to pivot with respect to the squab structure (1) between a raised position and an elongated position, and a deformable structure (3) comprising an upright (4) and a support member (5), the upright (4) being pivotally connected at one of its ends to the front part (1a) of the squab structure (1) and at its other end to the front part (5b) of the support member (5) so that the deformable structure (3) forms an armrest when the backrest structure (2) is in the raised position and so that the upright (4) and the support member (5) come into the line with each other at the level of the squab structure (1) and backrest structure (2) when the latter is in the elongated position.

Description

BACKGROUND OF THE INVENTION[0001]The invention relates to a seat which can be converted into a couchette with a deformable armrest, and more particularly such a seat for a vehicle such as an aircraft comprising a squab structure and a backrest structure mounted so as to pivot with respect to the squab structure between a raised position and an elongated position, and a deformable armrest structure comprising a front upright and a support member, the upright being pivotally connected at one of its ends to the front part of the seat structure and at its other end to the front part of the support member so that the deformable structure forms an armrest when the backrest structure is in the raised position and so that the upright and the support member come into line with each other at the level of the squab structure and backrest structure when the latter is in the elongated position.[0002]Such a seat is already known, for example through the document EP-A 0 982 226.[0003]In this known...

AI Technical Summary

Benefits of technology

[0009]More particularly, the aim of the invention is to provide a seat which can be converted into a couchette, the armrest of which comes to widen the sleeping surface when the backrest is in the elongated position, but which affords maximum comfort for the occupant when the backrest is in the raised position or an intermediate position.

[0014]Thus, the rear part of the support member is no longer connected rigidly to the backrest structure although the movements of the latter with respect to the squab structure control the deformations of the structure constituted by the upright and the support member.

[0015]It is no longer necessary for the support member, the upright, the squab structure and the backrest structure to constitute a deformable parallelogram.

[0016]It is thus possible to increase the length of the support member while limiting the total space requirement of the armrest.

[0017]Furthermore, the arrangement according to the invention makes it possible to limit the variation in height between the support member and the squab when the backrest is in a substantially vertical or slightly inclined position.

[0018]The runner / pivot connection between the support member and the backrest structure therefore makes it possible to improve the junction between the foam upholstery of the support member and that of the backrest structure.

Problems solved by technology

This has a number of drawbacks for the comfort of the occupant of the seat, in particular in the intermediate positions between the raised position and the elongated position.

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